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<h2>What is cdec?</h2>
<p id="intro">cdec is a decoder, aligner, and learning framework for statistical machine translation and similar structured prediction models developed by <a href="http://www.cs.cmu.edu/~cdyer/">Chris Dyer</a> at the <a href="https://www.lti.cs.cmu.edu/">Language Technologies Institute</a> in <a href="http://www.cmu.edu/index.shtml">Carnegie Mellon University</a>, <a href="http://www.cs.cmu.edu/~cdyer/students.html">his students</a>, and <a href="http://www.cdec-decoder.org/developers/contributors.html">lots of volunteers</a>. It supports:</p>
<ul>
    <li>Translation and alignment modeling based on
    <ul>
       <li><a href="/concepts/fsts.html">Finite-state transducers</a></li>
       <li><a href="/concepts/scfgs.html">Synchronous context-free grammars</a>
       <li><a href="/concepts/xrs.html">extended tree-to-string transducers (<b>xRs</b>)</a></li>
    </ul>
    <li>Implementations of <a href="/guide/training.html">many parameter learning algorithms</a>.</li>
    <li>A fast, extensible C++ implementation and flexible Python interface (<a href="http://victor.chahuneau.fr/pub/mtm12/">pycdec</a>).</li>
    <li>Modular architecture that separates search space construction, rescoring, and inference.</li>
    <ul>
        <li><a href="/concepts/rescoring_external.html">Rescore hypergraphs (i.e., forests, CFGs) from other tools</a>, and do parameter tuning.</li>
    </ul>
    <li>Realtime adaptive translation with <a href="http://www.cs.cmu.edu/~./mdenkows/cdec-realtime.html">cdec Realtime</a></li>
</ul>
</section>
<section>
<h2>Documentation</h2>
<ul>
  <li><a href="/guide/tutorial.html">A step-by-step tutorial for building a translation system</i></a>.</li>
  <li>The <a href="/guide">User guide</a> contains an overview of <tt>cdec</tt>'s features.</li>
  <li><a href="/concepts">Concepts</a> provides an basic overview of statistical machine translation concepts.</li>
  <li>Developers should have a look at <a href="/developers">this section</a> for documentation about the code.</li>
</ul>
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<section>
<h2>Source code</h2>
<p><a href="http://github.com/redpony/cdec"><tt>cdec</tt> is developed on Github</a>, and interested developers are encouraged to fork us, develop the project further, and submit pull requests.</p>
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<h2>Citation</h2>
<p>If you make use of cdec, please cite:</p>
<p><a href="http://www.cs.cmu.edu/~cdyer">C. Dyer</a>, <a href="http://www.cs.jhu.edu/~alopez/">A. Lopez</a>, <a href="http://cs.jhu.edu/~juri/">J. Ganitkevitch</a>, <a href="http://cs.jhu.edu/~jonny/">J. Weese</a>, <a href="http://www.cs.umd.edu/~fture/Home.html">F. Ture</a>, <a href="http://www.clg.ox.ac.uk/blunsom/">P. Blunsom</a>, H. Setiawan, <a href="http://www.umiacs.umd.edu/~vlad/">V. Eidelman</a>, and <a href="http://www.umiacs.umd.edu/~resnik/">P. Resnik</a>. <a href="http://www.aclweb.org/anthology/P/P10/P10-4002.pdf">cdec: A Decoder, Alignment, and Learning Framework for Finite-State and Context-Free Translation Models.</a> In <i>Proceedings of ACL</i>, July, 2010. <a href="cdec.bibtex.txt">[bibtex]</a>
<h2>License</h2>
<p>The cdec source code is released under the terms of the <a href="http://www.apache.org/licenses/LICENSE-2.0.html">Apache License, Version 2.0</a>. The <a href="http://www.chokkan.org/software/liblbfgs/">libLBFGS</a> library source code is distributed with cdec, and it is released under the terms of the <a href="http://opensource.org/licenses/mit-license.php">MIT License</a>.</p>
<h2>Acknowledgements</h2>
<p>cdec was developed and is supported in part by grants from DARPA, the National Science Foundation, and the US Army Research Office.</p>
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